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Method for treating iron-carbon microelectrode and sewage

An iron-carbon microelectrode and sewage treatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of low ammonia nitrogen removal rate and inability to simultaneously remove nitrogen pollution in sewage and phosphorus-containing pollutants, etc., to achieve the effect of wide range of sources, lower investment and operation costs, and lower preparation and use costs.

Active Publication Date: 2012-08-15
湖南艾森尼克环保科技有限公司
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Problems solved by technology

[0005] The iron-carbon microelectrode reported in the above literature is an iron-carbon microelectrode composed of granular or powder iron-carbon fillers. This iron-carbon microelectrode has a high removal rate for COD, nitrobenzene compounds, chroma, and heavy metals in sewage. However, this traditional method of particle or powder iron-carbon filler micro-electrolysis cannot achieve the effect of simultaneously removing nitrogen-containing pollutants and phosphorus-containing pollutants in sewage, and the removal rate of ammonia nitrogen is low

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  • Method for treating iron-carbon microelectrode and sewage
  • Method for treating iron-carbon microelectrode and sewage
  • Method for treating iron-carbon microelectrode and sewage

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Embodiment 1

[0069] The specific surface area is 1000m 2 / g, polyacrylonitrile-based carbon fibers with a diameter of 7 μm are cut into small fiber bundles with a length of about 25 cm to 30 cm, and 5 g of the polyacrylonitrile-based carbon fiber bundles are suspended on a diameter of 5 mm and a mass of 5 mm by winding. On the iron wire of 25g, the suspended length of the carbon fiber hanging on the iron wire is about 10cm, obtain as figure 1 An iron-carbon microelectrode with the structure shown. and put it in accordance with Figure 5 shown in the installation method, installed in the figure 2 In the shown 10L reactor, the filling rate of the iron-carbon microelectrode is 75%, and an iron-carbon microelectrode reactor is obtained.

[0070] Take the Qinghe river water in the Lishuiqiao section of Chaoyang District, Beijing as the treatment object, place the iron-carbon microelectrode reactor in it, aerate it through the air inlet 7, and keep the concentration of dissolved oxygen in th...

Embodiment 2

[0076] The carbon fiber in 5g embodiment 1 is suspended on the iron wire of 10g by the mode of winding respectively, and the length that makes the suspension of described carbon fiber is about 15cm, obtains as follows figure 1 An iron-carbon microelectrode with the structure shown.

[0077] Such as Figure 4 In the placement method shown, the iron-carbon microelectrode was placed in a glass tank with a length, width and height of 30 cm, 30 cm and 40 cm, respectively, filled with sewer sewage, and artificially synthesized phosphorus containing concentration of 50 mg / L was added thereto. High phosphate wastewater, so that the concentration of phosphorus in the phosphate of the sewage in the glass tank is 5mg / L, which is used to simulate the lake or pool sewage water body. The iron-carbon microelectrodes are arranged in a double-layer staggered up and down in the glass cylinder, as shown in Figure 5 as shown, Figure 5 A top view of an iron-carbon microelectrode located in a ...

Embodiment 3

[0080] The carbon fiber used in 30g embodiment 1 is suspended on the iron wire of 30g by the mode of winding, and the suspended length that makes carbon fiber hang on the described iron wire is about 10cm, obtains as follows figure 1 The iron-carbon microelectrode shown. The obtained iron-carbon microelectrodes were mounted on such as figure 2 In the shown 10L reactor, the filling rate of the iron-carbon microelectrode is about 80%, and the iron-carbon microelectrode reactor is obtained.

[0081] The iron-carbon microelectrode reactor is placed in the mixed water body of the Qinghe river water of embodiment 1 and the underground sewage of embodiment 2, and the contents of total organic carbon, total nitrogen and total phosphorus in the mixed water body are respectively 15-18mg / L , 21~25mg / L and 2~3.5mg / L. The mixed water body is aerated so that the concentration of dissolved oxygen is 1mg / L~3mg / L, and the water is continuously fed through a peristaltic pump, and the mixed w...

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Abstract

The invention provides an iron-carbon microelectrode, which comprises an iron base material and carbon fibers suspended on the iron base material. Sewage is treated by means of directly standing the iron-carbon microelectrode in the aerated sewage. The iron-carbon microelectrode can generate micro-current, iron ions, active radical, high-adsorption iron compound and the like under a micro-electrolysis effect, biological activity and biochemical degradability of organisms can be improved, inorganic phosphate ions, inorganic sulfate ions, inorganic metal ions and the like are removed, and the purpose of purifying the sewage is achieved. In addition, the carbon fibers suspended on the iron base material have high adsorption and biocompatibility, dwelling and breeding of microorganisms and formation of a complex microbial film system are facilitated, and the organisms, ammonia nitrogen, total nitrogen, total phosphorus and the like can be removed. Accordingly, the iron-carbon microelectrode can synchronously remove nitrogen pollutants and phosphorous pollutants in the sewage, and has high organism, ammonia nitrogen and soluble phosphate removal rate.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an iron-carbon microelectrode and a sewage treatment method. Background technique [0002] With the progress of society and the improvement of human living standards, there are more and more industrial sewage and urban domestic sewage, which not only causes waste of water resources but also seriously affects the water environment and the image of towns, endangering water organisms and human health. , so the wastewater needs to be treated to meet national and local standards. [0003] Micro-electrolysis technology is currently an ideal process for treating high-concentration organic sewage. It uses the micro-electrolysis material filled in the sewage to generate a 1.2V potential difference to electrolyze the sewage to achieve the degradation of organic sewage. purpose of pollutants. At present, the most commonly used microelectrode in micro-electrolysis technolo...

Claims

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Application Information

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IPC IPC(8): C02F1/461
Inventor 余辉姚理为余建平田学达刘倩王雪牛勇燕姝雯杨凡胡洋杜东
Owner 湖南艾森尼克环保科技有限公司
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